GHSA-49R3-2549-3633

Vulnerability from github – Published: 2020-12-08 14:18 – Updated: 2023-05-16 16:06
VLAI?
Summary
omniauth-apple allows attacker to fake their email address during authentication
Details

Impact

This vulnerability impacts applications using the omniauth-apple strategy of OmniAuth and using the info.email field of OmniAuth's Auth Hash Schema for any kind of identification. The value of this field may be set to any value of the attacker's choice including email addresses of other users.

For example, an application using omniauth-apple with the following code will be impacted:

def omniauth_callback
    auth_hash = request.env['omniauth.auth']
    @authenticated_user = User.find_by(email: auth_hash.info.email)
end

Applications not using info.email for identification but are instead using the uid field are not impacted in the same manner. Note, these applications may still be negatively affected if the value of info.email is being used for other purposes.

Patches

Applications using affected versions of omniauth-apple are advised to upgrade to omniauth-apple version 1.0.1 or later.

Workarounds

If unable to upgrade to a patched version, monkey patching OmniAuth::Strategies::Apple#email as follows is advised as a workaround:

module OmniAuth
  module Strategies
    class Apple
      def email
        id_info['email']
      end
    end
  end
end
Severity ?
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "omniauth-apple"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-26254"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-290"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-12-08T14:17:26Z",
    "nvd_published_at": "2020-12-08T15:15:11Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nThis vulnerability impacts applications using the [omniauth-apple](https://github.com/nhosoya/omniauth-apple) strategy of OmniAuth and using the `info.email` field of OmniAuth\u0027s [Auth Hash Schema](https://github.com/omniauth/omniauth/wiki/Auth-Hash-Schema) for any kind of identification.  The value of this field may be set to any value of the attacker\u0027s choice including email addresses of other users.\n\nFor example, an application using omniauth-apple with the following code will be impacted:\n```ruby\ndef omniauth_callback\n    auth_hash = request.env[\u0027omniauth.auth\u0027]\n    @authenticated_user = User.find_by(email: auth_hash.info.email)\nend\n```\n\nApplications not using `info.email` for identification but are instead using the `uid` field are not impacted in the same manner.  Note, these applications may still be negatively affected if the value of `info.email` is being used for other purposes.\n\n### Patches\n\nApplications using affected versions of omniauth-apple are advised to upgrade to omniauth-apple version 1.0.1 or later.\n\n### Workarounds\n\nIf unable to upgrade to a patched version, monkey patching `OmniAuth::Strategies::Apple#email` as follows is advised as a workaround:\n\n```ruby\nmodule OmniAuth\n  module Strategies\n    class Apple\n      def email\n        id_info[\u0027email\u0027]\n      end\n    end\n  end\nend\n```",
  "id": "GHSA-49r3-2549-3633",
  "modified": "2023-05-16T16:06:03Z",
  "published": "2020-12-08T14:18:19Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nhosoya/omniauth-apple/security/advisories/GHSA-49r3-2549-3633"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26254"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nhosoya/omniauth-apple/commit/b37d5409213adae2ca06a67fec14c8d3d07d9016"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nhosoya/omniauth-apple"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nhosoya/omniauth-apple/blob/master/CHANGELOG.md#101---2020-12-03"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/omniauth-apple/CVE-2020-26254.yml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "omniauth-apple allows attacker to fake their email address during authentication"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.